Public bug reported:

[Impact]
AMD request to backport USB4 support patches.

[Fix]
Add some quirks/fixes for AMD USB4 controller.

[Test]
I don't have the hardware, so it requires AMD to validate the backport.

[Where problems could occur]
- The enumeration of switch ports is changed, the effect is unknown.
- The QUIRK_AUTO_CLEAR_INT is only applied to Intel TBT controller. I've
  heard that Asmedia also produces TBT controllers but I've never seen
  one. So the change will affect other vendor's TBT controller, if they
  exist.

So only apply it to Impish, Unstable and OEM-5.13 to limit regression
risk.

It doesn't break Intel Thunderbolt per my limited testing.

** Affects: linux (Ubuntu)
     Importance: Low
         Status: Confirmed

** Affects: linux-oem-5.13 (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: linux (Ubuntu Focal)
     Importance: Undecided
         Status: Won't Fix

** Affects: linux-oem-5.13 (Ubuntu Focal)
     Importance: Low
         Status: Confirmed

** Affects: linux (Ubuntu Impish)
     Importance: Low
         Status: Confirmed

** Affects: linux-oem-5.13 (Ubuntu Impish)
     Importance: Undecided
         Status: New

** Also affects: linux-oem-5.13 (Ubuntu)
   Importance: Undecided
       Status: New

** Also affects: linux (Ubuntu Impish)
   Importance: Undecided
       Status: New

** Also affects: linux-oem-5.13 (Ubuntu Impish)
   Importance: Undecided
       Status: New

** Also affects: linux (Ubuntu Focal)
   Importance: Undecided
       Status: New

** Also affects: linux-oem-5.13 (Ubuntu Focal)
   Importance: Undecided
       Status: New

** Changed in: linux (Ubuntu Focal)
       Status: New => Won't Fix

** Changed in: linux (Ubuntu Impish)
       Status: New => Confirmed

** Changed in: linux (Ubuntu Impish)
   Importance: Undecided => Low

** Changed in: linux-oem-5.13 (Ubuntu Focal)
       Status: New => Confirmed

** Changed in: linux-oem-5.13 (Ubuntu Focal)
   Importance: Undecided => Low

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https://bugs.launchpad.net/bugs/1941036

Title:
   Add USB4 support for AMD SoC

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